source4/dsdb/repl/drepl_service.h

   1 /*
   2    Unix SMB/CIFS mplementation.
   3    DSDB replication service
   4
   5    Copyright (C) Stefan Metzmacher 2007
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 */
  21
  22 #ifndef _DSDB_REPL_DREPL_SERVICE_H_
  23 #define _DSDB_REPL_DREPL_SERVICE_H_
  24
  25 #include "librpc/gen_ndr/ndr_drsuapi_c.h"
  26
  27 struct dreplsrv_service;
  28 struct dreplsrv_partition;
  29
  30 struct dreplsrv_drsuapi_connection {
  31         /*
  32          * this pipe pointer is also the indicator
  33          * for a valid connection
  34          */
  35         struct dcerpc_pipe *pipe;
  36         struct dcerpc_binding_handle *drsuapi_handle;
  37
  38         DATA_BLOB gensec_skey;
  39         struct drsuapi_DsBindInfo28 remote_info28;
  40         struct policy_handle bind_handle;
  41 };
  42
  43 struct dreplsrv_out_connection {
  44         struct dreplsrv_out_connection *prev, *next;
  45
  46         struct dreplsrv_service *service;
  47
  48         /*
  49          * the binding for the outgoing connection
  50          */
  51         struct dcerpc_binding *binding;
  52
  53         /* the out going connection to the source dsa */
  54         struct dreplsrv_drsuapi_connection *drsuapi;
  55 };
  56
  57 struct dreplsrv_partition_source_dsa {
  58         struct dreplsrv_partition_source_dsa *prev, *next;
  59
  60         struct dreplsrv_partition *partition;
  61
  62         /*
  63          * the cached repsFrom value for this source dsa
  64          *
  65          * it needs to be updated after each DsGetNCChanges() call
  66          * to the source dsa
  67          *
  68          * repsFrom1 == &_repsFromBlob.ctr.ctr1
  69          */
  70         struct repsFromToBlob _repsFromBlob;
  71         struct repsFromTo1 *repsFrom1;
  72
  73         /* the last uSN when we sent a notify */
  74         uint64_t notify_uSN;
  75
  76         /* the reference to the source_dsa and its outgoing connection */
  77         struct dreplsrv_out_connection *conn;
  78 };
  79
  80 struct dreplsrv_partition {
  81         struct dreplsrv_partition *prev, *next;
  82
  83         struct dreplsrv_service *service;
  84
  85         /* the dn of the partition */
  86         struct ldb_dn *dn;
  87         struct drsuapi_DsReplicaObjectIdentifier nc;
  88
  89         /*
  90          * uptodate vector needs to be updated before and after each DsGetNCChanges() call
  91          *
  92          * - before: we need to use our own invocationId together with our highestCommittedUSN
  93          * - after: we need to merge in the remote uptodatevector, to avoid reading it again
  94          */
  95         struct replUpToDateVectorCtr2 uptodatevector;
  96         struct drsuapi_DsReplicaCursorCtrEx uptodatevector_ex;
  97
  98         /*
  99          * a linked list of all source dsa's we replicate from
 100          */
 101         struct dreplsrv_partition_source_dsa *sources;
 102
 103         /*
 104          * a linked list of all source dsa's we will notify,
 105          * that are not also in sources
 106          */
 107         struct dreplsrv_partition_source_dsa *notifies;
 108
 109         bool partial_replica;
 110         bool rodc_replica;
 111 };
 112
 113 typedef void (*dreplsrv_extended_callback_t)(struct dreplsrv_service *,
 114                                              WERROR,
 115                                              enum drsuapi_DsExtendedError,
 116                                              void *cb_data);
 117
 118 struct dreplsrv_out_operation {
 119         struct dreplsrv_out_operation *prev, *next;
 120         time_t schedule_time;
 121
 122         struct dreplsrv_service *service;
 123
 124         struct dreplsrv_partition_source_dsa *source_dsa;
 125
 126         /* replication options - currently used by DsReplicaSync */
 127         uint32_t options;
 128         enum drsuapi_DsExtendedOperation extended_op;
 129         uint64_t fsmo_info;
 130         enum drsuapi_DsExtendedError extended_ret;
 131         dreplsrv_extended_callback_t callback;
 132         void *cb_data;
 133         /* more replication flags - used by DsReplicaSync GET_TGT */
 134         uint32_t more_flags;
 135 };
 136
 137 struct dreplsrv_notify_operation {
 138         struct dreplsrv_notify_operation *prev, *next;
 139         time_t schedule_time;
 140
 141         struct dreplsrv_service *service;
 142         uint64_t uSN;
 143
 144         struct dreplsrv_partition_source_dsa *source_dsa;
 145         bool is_urgent;
 146         uint32_t replica_flags;
 147 };
 148
 149 struct dreplsrv_service {
 150         /* the whole drepl service is in one task */
 151         struct task_server *task;
 152
 153         /* the time the service was started */
 154         struct timeval startup_time;
 155
 156         /*
 157          * system session info
 158          * with machine account credentials
 159          */
 160         struct auth_session_info *system_session_info;
 161
 162         /*
 163          * a connection to the local samdb
 164          */
 165         struct ldb_context *samdb;
 166
 167         /* the guid of our NTDS Settings object, which never changes! */
 168         struct GUID ntds_guid;
 169         /*
 170          * the struct holds the values used for outgoing DsBind() calls,
 171          * so that we need to set them up only once
 172          */
 173         struct drsuapi_DsBindInfo28 bind_info28;
 174
 175         /* some stuff for periodic processing */
 176         struct {
 177                 /*
 178                  * the interval between to periodic runs
 179                  */
 180                 uint32_t interval;
 181
 182                 /*
 183                  * the timestamp for the next event,
 184                  * this is the timstamp passed to event_add_timed()
 185                  */
 186                 struct timeval next_event;
 187
 188                 /* here we have a reference to the timed event the schedules the periodic stuff */
 189                 struct tevent_timer *te;
 190         } periodic;
 191
 192         /* some stuff for running only the incoming notify ops */
 193         struct {
 194                 /*
 195                  * here we have a reference to the immidicate event that was
 196                  * scheduled from the DsReplicaSync
 197                  */
 198                 struct tevent_immediate *im;
 199         } pending;
 200
 201         /* some stuff for notify processing */
 202         struct {
 203                 /*
 204                  * the interval between notify runs
 205                  */
 206                 uint32_t interval;
 207
 208                 /*
 209                  * the timestamp for the next event,
 210                  * this is the timstamp passed to event_add_timed()
 211                  */
 212                 struct timeval next_event;
 213
 214                 /* here we have a reference to the timed event the schedules the notifies */
 215                 struct tevent_timer *te;
 216         } notify;
 217
 218         /*
 219          * the list of partitions we need to replicate
 220          */
 221         struct dreplsrv_partition *partitions;
 222
 223         /*
 224          * the list of cached connections
 225          */
 226         struct dreplsrv_out_connection *connections;
 227
 228         struct {
 229                 /* the pointer to the current active operation */
 230                 struct dreplsrv_out_operation *current;
 231
 232                 /* the list of pending operations */
 233                 struct dreplsrv_out_operation *pending;
 234
 235                 /* the list of pending notify operations */
 236                 struct dreplsrv_notify_operation *notifies;
 237
 238                 /* an active notify operation */
 239                 struct dreplsrv_notify_operation *n_current;
 240         } ops;
 241
 242         bool rid_alloc_in_progress;
 243
 244         bool am_rodc;
 245 };
 246
 247 #include "lib/messaging/irpc.h"
 248 #include "dsdb/repl/drepl_out_helpers.h"
 249 #include "dsdb/repl/drepl_service_proto.h"
 250
 251 #endif /* _DSDB_REPL_DREPL_SERVICE_H_ */